Reinforcement for thin metal sheets at riveted connections.



c. 1. w. CLASE N. I REINFORCEMENT FOR THIN METAL SHEETS AT RIVETED CONNECTIONS. APPLICATION FILED FEB. 18. I914.

Lfi' fiwa Patented Apr. 11, 1916.

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CLAUS J. WERNER CLASEN, 0F DAVENPORT, IOWA, ASSIGNOR COMPANY, OF BETTENIDORF, IOWA, A CQBPORATION To THE nn'rrnnnon or IOWA.

REINFGRCEMENT FORTHIN METAL SHEETS AT ItIVETED CONNECTIONS.

Specification of Letters Patent.

Application filed February 18, 1914. Serial No. 819,482;

To aZZ whom it may concern:

Be it linown that .I, CLAUs J. Wnnunn Census, a citizen of the United States of America, and resident of Davenport, Scottcounty, Iowa, have invented a certain new and useful Improvement ind-Reinforcement for Thin Metal Sheets at Riveted Connections, of which the following is a specification. I

My invention relates to improvements in reinforcement for thin metal plates at points where connections are to be riveted thereto and has for its object the increasing of the sectional area of the plate at the point of intersection by the rivet without projecting anything but the rivet head beyond the surface of the plate.

I have chosen to illustrate my improved reinforcement as applied to the securing of ladder rounds or grab irons to the sides or ends of an ordinary freight car, which sides or ends consist of thin steel plates instead of the usual wood construction. I ac complish this in the manner shown in the accompanying drawing, in which- Figureiis an elevation of a portion of a car side showing my improvement as ap plied to several ladder rounds. Fig. II is an enlarged plan view of the ladder round connection. Fig. III- is a cross section thereof.

The grab irons or ladder rounds of an ordinary freight'car are usually located on the side of the car near the end thereof. One end of the round, in the case of a c: provided with an all steel superstructure, is usually riveted solidly to the heavy steel corner post which is invariably of a thickness to insure a substantial and Safe fasten-- ing. The other end of the rounds, however, must necessarily be secured directly to the body of the car and when this body consists of a thin steel plate or sheet, the fastening of a round thereto by simply punching a rivet hole in so thin a sheet and securing, the round by riveting is too in-- secure and 'so temporary in its serviceability as to fail to meet the requirements of the United States Safety Appliance Act regulating structures of this nature in the interest of the life and safety of railway employees. The sectional area of the ordinary sheet employed in structures of this nature is so small the pull on the rivet head would easily tear out or rupture the sheet and permit the rivet head to pull through.

My invention consists in forming in the sheet A. at the points of attachment of the ladder rounds thereto, the outwardly depressed saucer like indent B, provided at its center with the rivet hole C. snugly fitted into this indent is the circular metal disk or plate D provided with a rivet hole at its center in registration with the rivet hole in the sheet. As this disk can be made of considerable thickness, it, together with the sheet, produces a sectional area of considerable proportions, affording sufficient [surface contact to the rivet to insure a solid substantial joint or connection and absovided with. a centrally perforated indent or recess, and a reinforcing clement, centrally perforated .in registration with the perforation in said sheet, filling said indent or recess.

Signed by me at Davenport, Iowa, this 2nd day of l chruary 1914.

v CLAUS J. WERNER GLASEN.

Witnesses J. L. GODDARD, WV. G. QUAYLE.

Patented Apr. ii, 19116. i

the thin sheet, 75 

